镀镍电镀用光亮添加剂丙炔醇的快速气相色谱分析

应用气相色谱法测定了某镀镍电镀液开缸液和补液中的光亮添加剂丙炔醇的含量，采用ＧＤＸ－１０３填充柱，样品用水稀释后即可进样分析，结果可靠，回收率均为９７％，变异系数分别为１．５％和１．３％，线性相关系数为０．９９９７．方法简便，快速．

低温超声波化学镀镍工艺研究

为降低常规化学镀的施镀温度，采用低温超声波化学镀镍工艺，研究了镀波成分、工艺条件的影响。与传统化学镀镍工艺相比，该工艺所得镀层含磷量高、硬度高，组织结构致密均匀。

厚度、划伤对铝合金双层镀镍耐腐蚀性能的影响

针对电连接器的铝合金壳体在海洋环境下易发生腐蚀,需要制备防护镀层以具备良好屏蔽、导电与耐腐蚀性能的需求。本文以连接器壳体常用的2A12铝合金为基材,选择由含磷9 wt.%~13 wt.%的化学镀镍磷合金层为底层防护层(厚为16~18μm)、电镀光亮镍层为面层(厚度在6~8μm)组成的双层防护结构,考察其在3.5 wt.%氯化钠溶液中的电化学腐蚀行为。结果表明:该镀层厚度组合的样品经过816 h的中性盐雾腐蚀实验,铝合金壳体上的双层镀镍表面没有出现腐蚀点,表现出良好的耐腐蚀性能,而双层组合镀镍层中任一层遭受到破坏其完整性的机械损伤时,均会严重降低组合镀镍层的耐腐蚀性能。

节约资源、降低成本,新型电镀设备胜出的优势

铜矿资源相当宝贵,磷铜球的制作更是来之不易。新型VCP线和卷对卷线在镀铜、镀镍金上因为镀层均匀性极佳,因而节省铜和镍、金等贵重金属,具有极其杰出的使用优势。

Effect of mechanical attrition on microstructure and property of electroplated Ni coating

Ni coating was deposited on carbon steel by a mechanical attrition enhanced electroplating （MAEE） process. During the electroplating, the mechanical attrition（MA） was introduced by impact of glass balls on the sample surface with a special vibrating frequency. The surface and cross-sectional images of Ni coating were observed with SEM. The microstructure and crystallinity of coating were examined with TEM and XRD. The electrochemical performance of coating was measured with polarization curves and electrochemical impedance spectroscopy （EIS） and its mechanical behaviours, such as tensile strength and hardness, were studied. The results show that the MA has significant effects on the microstructure and property of the electroplated Ni coating. By MA, the coating becomes smooth, compact, thin and has refined grains and is free of cracks and pores. Consequently, the adhesion, tensile strength, hardness and corrosion resistance of coating are improved significantly.